mirror of
https://github.com/freebsd/freebsd-src
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257 lines
7.7 KiB
C
257 lines
7.7 KiB
C
/*
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* Copyright 2004-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <sys/cdefs.h>
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#include <sys/libkern.h>
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#include <sys/malloc.h>
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#include <opencrypto/cryptodev.h>
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#include <opencrypto/xform_auth.h>
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#include <crypto/openssl/ossl.h>
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#include <crypto/openssl/ossl_sha.h>
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/* sha512-x86_64.S */
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void sha512_block_data_order(SHA512_CTX *c, const void *in, size_t num);
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/* From crypto/sha/sha512.c */
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#if defined(__i386__) || defined(__amd64__) || defined(__aarch64__)
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# define SHA512_BLOCK_CAN_MANAGE_UNALIGNED_DATA
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#endif
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static void
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ossl_sha384_init(void *c_)
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{
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SHA512_CTX *c = c_;
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c->h[0] = U64(0xcbbb9d5dc1059ed8);
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c->h[1] = U64(0x629a292a367cd507);
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c->h[2] = U64(0x9159015a3070dd17);
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c->h[3] = U64(0x152fecd8f70e5939);
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c->h[4] = U64(0x67332667ffc00b31);
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c->h[5] = U64(0x8eb44a8768581511);
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c->h[6] = U64(0xdb0c2e0d64f98fa7);
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c->h[7] = U64(0x47b5481dbefa4fa4);
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c->Nl = 0;
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c->Nh = 0;
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c->num = 0;
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c->md_len = SHA384_DIGEST_LENGTH;
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}
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static void
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ossl_sha512_init(void *c_)
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{
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SHA512_CTX *c = c_;
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c->h[0] = U64(0x6a09e667f3bcc908);
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c->h[1] = U64(0xbb67ae8584caa73b);
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c->h[2] = U64(0x3c6ef372fe94f82b);
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c->h[3] = U64(0xa54ff53a5f1d36f1);
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c->h[4] = U64(0x510e527fade682d1);
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c->h[5] = U64(0x9b05688c2b3e6c1f);
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c->h[6] = U64(0x1f83d9abfb41bd6b);
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c->h[7] = U64(0x5be0cd19137e2179);
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c->Nl = 0;
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c->Nh = 0;
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c->num = 0;
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c->md_len = SHA512_DIGEST_LENGTH;
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}
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static void
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ossl_sha512_final(uint8_t *md, void *c_)
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{
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SHA512_CTX *c = c_;
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unsigned char *p = (unsigned char *)c->u.p;
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size_t n = c->num;
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p[n] = 0x80; /* There always is a room for one */
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n++;
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if (n > (sizeof(c->u) - 16)) {
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memset(p + n, 0, sizeof(c->u) - n);
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n = 0;
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sha512_block_data_order(c, p, 1);
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}
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memset(p + n, 0, sizeof(c->u) - 16 - n);
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#if _BYTE_ORDER == _BIG_ENDIAN
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c->u.d[SHA_LBLOCK - 2] = c->Nh;
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c->u.d[SHA_LBLOCK - 1] = c->Nl;
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#else
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p[sizeof(c->u) - 1] = (unsigned char)(c->Nl);
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p[sizeof(c->u) - 2] = (unsigned char)(c->Nl >> 8);
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p[sizeof(c->u) - 3] = (unsigned char)(c->Nl >> 16);
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p[sizeof(c->u) - 4] = (unsigned char)(c->Nl >> 24);
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p[sizeof(c->u) - 5] = (unsigned char)(c->Nl >> 32);
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p[sizeof(c->u) - 6] = (unsigned char)(c->Nl >> 40);
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p[sizeof(c->u) - 7] = (unsigned char)(c->Nl >> 48);
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p[sizeof(c->u) - 8] = (unsigned char)(c->Nl >> 56);
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p[sizeof(c->u) - 9] = (unsigned char)(c->Nh);
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p[sizeof(c->u) - 10] = (unsigned char)(c->Nh >> 8);
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p[sizeof(c->u) - 11] = (unsigned char)(c->Nh >> 16);
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p[sizeof(c->u) - 12] = (unsigned char)(c->Nh >> 24);
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p[sizeof(c->u) - 13] = (unsigned char)(c->Nh >> 32);
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p[sizeof(c->u) - 14] = (unsigned char)(c->Nh >> 40);
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p[sizeof(c->u) - 15] = (unsigned char)(c->Nh >> 48);
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p[sizeof(c->u) - 16] = (unsigned char)(c->Nh >> 56);
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#endif
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sha512_block_data_order(c, p, 1);
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switch (c->md_len) {
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/* Let compiler decide if it's appropriate to unroll... */
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case SHA224_DIGEST_LENGTH:
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for (n = 0; n < SHA224_DIGEST_LENGTH / 8; n++) {
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SHA_LONG64 t = c->h[n];
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*(md++) = (unsigned char)(t >> 56);
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*(md++) = (unsigned char)(t >> 48);
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*(md++) = (unsigned char)(t >> 40);
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*(md++) = (unsigned char)(t >> 32);
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*(md++) = (unsigned char)(t >> 24);
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*(md++) = (unsigned char)(t >> 16);
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*(md++) = (unsigned char)(t >> 8);
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*(md++) = (unsigned char)(t);
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}
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/*
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* For 224 bits, there are four bytes left over that have to be
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* processed separately.
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*/
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{
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SHA_LONG64 t = c->h[SHA224_DIGEST_LENGTH / 8];
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*(md++) = (unsigned char)(t >> 56);
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*(md++) = (unsigned char)(t >> 48);
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*(md++) = (unsigned char)(t >> 40);
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*(md++) = (unsigned char)(t >> 32);
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}
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break;
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case SHA256_DIGEST_LENGTH:
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for (n = 0; n < SHA256_DIGEST_LENGTH / 8; n++) {
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SHA_LONG64 t = c->h[n];
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*(md++) = (unsigned char)(t >> 56);
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*(md++) = (unsigned char)(t >> 48);
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*(md++) = (unsigned char)(t >> 40);
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*(md++) = (unsigned char)(t >> 32);
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*(md++) = (unsigned char)(t >> 24);
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*(md++) = (unsigned char)(t >> 16);
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*(md++) = (unsigned char)(t >> 8);
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*(md++) = (unsigned char)(t);
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}
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break;
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case SHA384_DIGEST_LENGTH:
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for (n = 0; n < SHA384_DIGEST_LENGTH / 8; n++) {
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SHA_LONG64 t = c->h[n];
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*(md++) = (unsigned char)(t >> 56);
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*(md++) = (unsigned char)(t >> 48);
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*(md++) = (unsigned char)(t >> 40);
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*(md++) = (unsigned char)(t >> 32);
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*(md++) = (unsigned char)(t >> 24);
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*(md++) = (unsigned char)(t >> 16);
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*(md++) = (unsigned char)(t >> 8);
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*(md++) = (unsigned char)(t);
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}
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break;
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case SHA512_DIGEST_LENGTH:
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for (n = 0; n < SHA512_DIGEST_LENGTH / 8; n++) {
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SHA_LONG64 t = c->h[n];
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*(md++) = (unsigned char)(t >> 56);
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*(md++) = (unsigned char)(t >> 48);
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*(md++) = (unsigned char)(t >> 40);
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*(md++) = (unsigned char)(t >> 32);
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*(md++) = (unsigned char)(t >> 24);
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*(md++) = (unsigned char)(t >> 16);
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*(md++) = (unsigned char)(t >> 8);
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*(md++) = (unsigned char)(t);
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}
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break;
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/* ... as well as make sure md_len is not abused. */
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default:
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__assert_unreachable();
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}
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}
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static int
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ossl_sha512_update(void *c_, const void *_data, unsigned int len)
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{
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SHA512_CTX *c = c_;
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SHA_LONG64 l;
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unsigned char *p = c->u.p;
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const unsigned char *data = (const unsigned char *)_data;
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if (len == 0)
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return 0;
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l = (c->Nl + (((SHA_LONG64) len) << 3)) & U64(0xffffffffffffffff);
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if (l < c->Nl)
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c->Nh++;
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if (sizeof(len) >= 8)
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c->Nh += (((SHA_LONG64) len) >> 61);
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c->Nl = l;
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if (c->num != 0) {
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size_t n = sizeof(c->u) - c->num;
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if (len < n) {
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memcpy(p + c->num, data, len), c->num += (unsigned int)len;
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return 0;
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} else {
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memcpy(p + c->num, data, n), c->num = 0;
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len -= n, data += n;
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sha512_block_data_order(c, p, 1);
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}
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}
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if (len >= sizeof(c->u)) {
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#ifndef SHA512_BLOCK_CAN_MANAGE_UNALIGNED_DATA
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if ((size_t)data % sizeof(c->u.d[0]) != 0)
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while (len >= sizeof(c->u))
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memcpy(p, data, sizeof(c->u)),
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sha512_block_data_order(c, p, 1),
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len -= sizeof(c->u), data += sizeof(c->u);
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else
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#endif
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sha512_block_data_order(c, data, len / sizeof(c->u)),
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data += len, len %= sizeof(c->u), data -= len;
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}
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if (len != 0)
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memcpy(p, data, len), c->num = (int)len;
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return 0;
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}
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struct auth_hash ossl_hash_sha384 = {
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.type = CRYPTO_SHA2_384,
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.name = "OpenSSL-SHA2-384",
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.hashsize = SHA2_384_HASH_LEN,
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.ctxsize = sizeof(SHA512_CTX),
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.blocksize = SHA2_384_BLOCK_LEN,
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.Init = ossl_sha384_init,
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.Update = ossl_sha512_update,
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.Final = ossl_sha512_final,
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};
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struct auth_hash ossl_hash_sha512 = {
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.type = CRYPTO_SHA2_512,
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.name = "OpenSSL-SHA2-512",
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.hashsize = SHA2_512_HASH_LEN,
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.ctxsize = sizeof(SHA512_CTX),
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.blocksize = SHA2_512_BLOCK_LEN,
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.Init = ossl_sha512_init,
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.Update = ossl_sha512_update,
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.Final = ossl_sha512_final,
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};
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_Static_assert(sizeof(SHA512_CTX) <= sizeof(struct ossl_hash_context),
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"ossl_hash_context too small");
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